You could read the summery below, or just read the 30 or so comics from about here on: cad-comic.com/cad/20120914Ethan was dicking around with his butter powered time machine, which turned on because a future version of himself activated it. He then kidnaps himself into the horrible future where humans are slaves and dairy is illegal. Apparently Ethan eventually managed to fix his robot pal Zeke's girlfriend bot Embla. This turned out horribly wrong, since Embla encouraged Zeke's 'kill all humans' sentiments. Embla is destroyed for trying to kill everyone in their sleep, so Zeke does the only rational thing and murders everyone Ethan ever loved in front of him. Then Zeke takes over the world. Future Ethan has to churn another batch of butter to power the machine, and past Ethan gets captured by the rebels. The rebels are aware of Ethan creating Zeke, and are understandably completely pissed. Past Ethan escapes and returns to the time machine, now powered, but a rebel scout follows, and is understandably freaked out seeing a fucking time machine. Future Ethan shoots the rebel scout Past Ethan was talking to, because they're dangerous and want him dead and shit. Dying rebel chick kills future Ethan with last breath, Time machine is damaged in process. Ethan jumps into time rift to prevent this horrible future, and also the universe destroying consequences of an exploding time machine. Lucas, Zeke and Lilah hear the imploding time machine, knowing Ethan was down there. Probably nothing left to bury. Epilogue: Lucas names his first born son Ethan. Zeke is accepted by the U.S. as the first A.I. citizen. And Lilah invests her life into The Church of Gaming, and builds a proper church building for it.
And then a few months of filler comic and a reboot I've yet to bother with.

Yeah, he basically went to the future, saw how much of the world he fucked up and decided not to go back through the portal as it was closing, meaning he was never around during that time to fuck up and Lilah (or whatever her name is) survives it sucked